christian_mr32 Posted November 19, 2009 Share Posted November 19, 2009 Dear members, I have an rb20det engine problem... The bearings in the block are apparently gone... but i dont know if i should get a new engine or just replace the block which is cheapest or if it'll run fine if i just change the block maybe there's more problems... but i was also thinking to just get an rb25det?? could somoone help out? how much is the cost for an rb25det and how much could i get a rb20det block for an r32 gts4 which is cheapest... Link to comment https://www.sau.com.au/forums/topic/296913-engine-block-problem/ Share on other sites More sharing options...
trel Posted November 19, 2009 Share Posted November 19, 2009 go the rb25, fits straight in. you can find one for about 800-1000 dollars. and factor in about 500 or so to put it in (if you remove the original motor yourself). Link to comment https://www.sau.com.au/forums/topic/296913-engine-block-problem/#findComment-4945391 Share on other sites More sharing options...
mad082 Posted November 19, 2009 Share Posted November 19, 2009 +1 for the 25. much nicer engine. more power up top and much more power down low. however i would go all out and get a halfcut so you can get the stronger gearbox as well (just noticed you mention a gts-4, so i'm not sure how compatiable the rb25 box is to the rb20, or if there is even any difference with the gts-4 boxes between the 20 and 25). Link to comment https://www.sau.com.au/forums/topic/296913-engine-block-problem/#findComment-4945413 Share on other sites More sharing options...
christian_mr32 Posted November 19, 2009 Author Share Posted November 19, 2009 yeah i think the gearbox is strong, and how much is the trouble in putting the wiring loom on? Link to comment https://www.sau.com.au/forums/topic/296913-engine-block-problem/#findComment-4945461 Share on other sites More sharing options...
Moodles2 Posted November 19, 2009 Share Posted November 19, 2009 Since you mention GTS4, unfortunately you can't just drop anyold RB20 or RB25 in, as the 4WD sump is different from the RWD. You would either need a RB20DET from another GTS4, or a RB25DET from a 4WD Stagea, or else you will have to get adapter plates etc... that's how I understand it anyway. Link to comment https://www.sau.com.au/forums/topic/296913-engine-block-problem/#findComment-4946220 Share on other sites More sharing options...
GTR-N1 Posted November 19, 2009 Share Posted November 19, 2009 ...and afterwards, remember to take the receipt for the engine (with engine #) to the RTA for updating your registration paper. ...and tell your insurance company about the upgrade too. Link to comment https://www.sau.com.au/forums/topic/296913-engine-block-problem/#findComment-4946346 Share on other sites More sharing options...
christian_mr32 Posted November 20, 2009 Author Share Posted November 20, 2009 Thanks for the help guys, appreciate it... Still deciding and save up money... my mates friends owns a r32 just recently fitted an rb25det and still using the standard rb20det gtst gearbox and standard loom!! i think the nistune would be useful to install?? Link to comment https://www.sau.com.au/forums/topic/296913-engine-block-problem/#findComment-4947467 Share on other sites More sharing options...
Moodles2 Posted November 20, 2009 Share Posted November 20, 2009 Yep Nistune is the way to go, should be easy Nistun'ing your current RB20 ecu wand loading the RB25 basemap into it. Link to comment https://www.sau.com.au/forums/topic/296913-engine-block-problem/#findComment-4947492 Share on other sites More sharing options...
christian_mr32 Posted November 20, 2009 Author Share Posted November 20, 2009 Is the r33 rb25det exactly the same as a stagea rb25det? as in internal wise... Link to comment https://www.sau.com.au/forums/topic/296913-engine-block-problem/#findComment-4948169 Share on other sites More sharing options...
mad082 Posted November 21, 2009 Share Posted November 21, 2009 i'm not entirely sure, but i think they can vary depending on which model stagea it is, as some have the neo engine like the r34. but i'm not sure about it. never really paid much attention to stagea motors and specs Link to comment https://www.sau.com.au/forums/topic/296913-engine-block-problem/#findComment-4948387 Share on other sites More sharing options...
tridentt150v Posted November 21, 2009 Share Posted November 21, 2009 Always wondered if you could get a modern GTS4 in 2.5t using a combo of parts fromt the stagea etc, probably not worth doing over an RB26 conversion though, although you would get VCT and Neo motor!!! Link to comment https://www.sau.com.au/forums/topic/296913-engine-block-problem/#findComment-4948423 Share on other sites More sharing options...
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